fix(serverless): Fix serverless check crash

[omriyoffe-panw]

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Fixes #6901

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Below is a concise technical summary of the changes proposed in this PR:

Enhances the serverless graph builder's attribute handling and updates test files with simplified passwords.

Topic	Details
Serverless Fix	Improves the local_graph.py file to handle non-string attributes in the serverless graph builder. Modified files (1) checkov/serverless/graph_builder/local_graph.py Latest Contributors(1) User Commit Date omriyoffe-panw feat-serverless-Server... December 08, 2024
Test Data Update	Updates test JSON files with simplified passwords for MySQL-related tests. Modified files (2) tests/arm/checks/resource/example_TestMySQLPublicAccessDisabled/fail2.json tests/arm/checks/resource/example_TestMySQLPublicAccessDisabled/pass2.json Latest Contributors(0) User Commit Date

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